Ion concentration detecting instrument and detecting method

A technology for ion concentration detection and signal detection, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of large volume, complex structure of detection equipment, and cumbersome detection process.

Inactive Publication Date: 2009-03-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing detection instruments need to be equipped with functions such as positioning, slope compensation, temperature compensation and equipotential adjustment on the hardware, which makes the detection equipment complex in structure, large in size, cumbersome in the detection process, and the factors affecting the detection results Too much, resulting in reduced reliability

Method used

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  • Ion concentration detecting instrument and detecting method
  • Ion concentration detecting instrument and detecting method
  • Ion concentration detecting instrument and detecting method

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Embodiment Construction

[0036] Embodiments of the present invention are as follows (the connection relationship of each part in the detector is as shown in Figure 2, and the specific circuit is shown in Figure 3): the measured solution 1 is the used nutrient solution for greenhouse soilless cultivation, and the potassium ion concentration therein is tested. detection. The ion-selective electrode 2 is a potassium electrode from Jiangsu Electroanalytical Instrument Factory, the reference electrode 3 is a matching 801 single-liquid junction saturated calomel electrode, and the temperature sensor 4 is a DS1820, all of which are placed outside the shell and introduced into the shell through wires. The signal processing circuit is connected, wherein the ion selective electrode and its reference electrode are connected to the signal preprocessor, and the temperature sensor is connected to the data calculator; the signal preprocessor 5 is composed of an amplifier circuit and a filter circuit, and the amplifie...

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Abstract

The invention provides an ion concentration detecting apparatus and detection process, wherein the detecting apparatus comprises a signal detecting device, a signal processing circuit and corresponding power source and casing, and the signal detecting device comprises an ion-selective electrode, a reference electrode and a temperature sensor, the signal processing circuit comprises a signal preprocessor, a data acquisition device, a data arithmetic device, an operational keyboard, a data display, a recorder or other peripheral devices. The invention also provides the detection process.

Description

technical field [0001] The invention relates to a device and a method for measuring ion concentration by using an ion selective electrode. Background technique [0002] With the improvement of ion concentration detection and control requirements in the fields of modern industry, agriculture and environmental protection, various ion concentration detection instruments have emerged as the times require, among which the ion selective electrode as the basic detection element is more commonly used. However, the electrical signal measured by the ion selective electrode will change with the change of temperature, that is, at different temperatures, the electrical signal measured for the measured object with the same ion concentration will be different. Therefore, the existing detection instruments need to be equipped with functions such as positioning, slope compensation, temperature compensation and equipotential adjustment on the hardware, which makes the detection equipment comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/333
Inventor 王永孙德敏秦琳琳吴刚
Owner UNIV OF SCI & TECH OF CHINA
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